Concept:The longest river in Africa is identified by comparing the total lengths of the major rivers on the continent.
Explanation:The River Nile is approximately
6,650 km long, which makes it the longest river in Africa.
It flows northward from East Africa and drains into the Mediterranean Sea.
The River Congo is the second longest in Africa, but it is shorter than the Nile.
The Zambezi and Senegal rivers are also important water bodies, yet neither reaches the length of the Nile.
Therefore, the correct option is the one that names the Nile.
Answer:B. Nile